Russia launched a fresh wave of missile and drone attacks on the Ukrainian capital early Monday, escalating tensions just a day before a crucial NATO summit in Ankara, which US President Donald Trump is expected to attend. The attack comes at a sensitive diplomatic moment, with the war in Ukraine set to dominate discussions among NATO leaders.Ukraine’s air force said Russia attacked Kiev using ballistic missiles, cruise missiles and drones, according to CNN. Powerful explosions echoed across central Kiev early Monday morning as air defense systems responded to the attack.Kyiv Mayor Vitali Klitschko said debris from intercepted missiles and drones caused fires and damage in at least two districts of the capital. Shortly before the explosions, air raid sirens had sounded throughout the city.The latest bombing came a day after Ukrainian President Volodymyr Zelensky warned that Russia was preparing another large-scale attack.Zelensky wrote onThe attack follows one of the deadliest Russian attacks on Kiev in recent months. Last Thursday’s attack killed at least 30 people, making it the third-deadliest attack on the Ukrainian capital since Russia launched a full-scale invasion, CNN reports.The new attack comes as NATO leaders prepare to meet in Ankara on Tuesday, where the war in Ukraine is expected to top the agenda. Russian forces have stepped up their offensive in Ukraine’s eastern Donetsk region, one of the Kremlin’s primary military objectives.At the same time, Ukraine has stepped up its long-range attacks inside Russian territory, targeting oil refineries, ports and military-industrial facilities with missiles and drones, according to CNN.The latest tensions come after a nearly 90-minute telephone conversation between Russian President Vladimir Putin and US President Donald Trump on July 4. Russia’s Foreign Ministry said that during the call, Trump once again offered to help end the war.